Guide-bar support for concrete-gages.



H. C. STRUCHEN. A GUIDE BAR SUPPORT FOR CONCRETE GAGES.

APPLICATION HI ED FEF. 2|, 1916. I 1,212,843. Patented Jan. 16,1917.

v UNITED STATES rnTENT OFFICE.

HENRY c. s'rnUcHEN. or s'r. PAUL, MInNEsorA.

GUIDE-BAR SUPPORT FOR CONCRETE-GAGES.

Specification of Letters Patent.

Patented Jan. 16, 1917 Application filed February 21, 1916. Serial No. 79,574.

To all whom it may concern.- I f Be 1t known that I, HENRY G. STRUCHEN,

a citizen of the United States, residingat .St; Paul,1inthe county of Ramsey and State of Minnesota, have invented new and useful Improvements in Guide-Bar Supports forConcrete-Gages, of which the following is a specificatiom y ihventionrelates to improvements in guide-bar supports for concrete gages. 7

Under the present system of constructing concrete floors, it is diflicult to level the surfaces thereof and thereby secure uniform thickness. It i; not unusual to find a variation in thickness of. two inches in such floors, which variation, of course, entails loss of economy in construction and defects in the completed structure.

It is the object of my invention to provide an inexpensive andeasily used device toremedy these defects.

' y A further'object is toprovide a gage ot' this kind, which may be removed from the fioor before the concrete is set and used a r it has served its purpose as a. gage, and

used as a hanger'as hereinafter described.

In the drawings, Figure 1 is' a perspective view in detail'illustrating a number of gages as used in the construction of a concrete floor; Fig. 2 is a detail sectional view showingfa gage embedded in the floor and serving as a hanger for objects therebeneath Fig. 3 isa perspective view in detail illustrating my preferred form of gage; Fig. 4

is a similar view showing a modified form thereof; and'Fig. 5 is a plan view illustrating'a blank from which my improved gage is formed, J I

Havin reference to the drawings, it will beseen m n Fig. 5 that the blank from which my gage is constructed is a strip of sheet metal. v The lower endof said strip is pointed by cutting away the corners on the dotted lines 11 and a perforation 12 is unched near said lower end, as indicated y the dotted circle. The strip 10 is also we near its upper end on the dotted lines 13, said cuts extending inward from oppo site edges of the strip, then downward, as

shown in said Fig. 5'; These cuts form arms 14, which are bent outward, then upward, to adapt them to receive a guide bar. The upper end of the strip 10 provides a head to again, or it may be depressed in the floor,

receive the blows of a, hammer when the gage is driven into a form, and the metal in the outer margins of said head above the arms Ll provides pliable retaining clips 15, which maybe bent laterally overthe guide within said arms. Said clips 15 also form projections which may be engaged bythe claws of a hammcror crowbar 1n pulling the gage from the form into which it is driven. A central longitudinal corrugation 16 is formed in thestrip 10 to strengthen the gage, and said corrugation converges at its lower end toward the polnt of said gage to facilitate the driving of the same into the floor of the ,form,

The modified form of my ga shown in Fig. 4, is identical with the pre erred form, alreadydescribed, except that the arms-14 and retaining clips 15 are offset upon opposite sidcs of the strip, instead of bein oflsetupon the same side as in the preferre form.

' In use, as will be seen by reference to Fig.

1, several of my improved gages are driven .to the desired depth at convenient intervals if it is desired to employ the gages as hangers beneath the floor, they are (after they have served their primary purpose) driven below the surface of the floor and allowed to become set in the concrete asthegsame hardens. To embed the head of the gage in the concrete floor for such secondary use,

the pointis driven through the fornnand when said form is subsequently removed, the perforated end'of said gage is accessible beneath thefloor for use .as ahanger for pi s or other fixtures.

y modified form of gage is particularly adapted for use at points where the ends of the guide bars 18 overla butmy preferred form may be used in such laces by employ-U ing two of said gages an arrangingthem back to hack, the arms of one gage embrace ing one guide and the arms of the other gage embracing the other guide. 7

Having described my invention, what I I for guides adapted to be claim-as new and desire to protect by Letters Patent, is: a v

1. A' guide-bar .support for a concrete gage comprising a sheet metal strip pointed at its lower end and'adapted'to be driven into a form for concrete 'floors, an arm cut and ofi'set from said strip to receive a guidebar and a pliable retaining clip formed by the metal at the topof the strip, said clip being adapted to be bent on said arm.

2. A guide-bar support for a concrete gage formed from a strip of, sheet metal pointed at itslower end and' reinforced 'by' a central longitudinal corrugation therein,

arms otlsetjfrom said strip and formed by cuts-extending inward from opposite edges of the strip, then downward, and retaining clips above the arms to'hold a guide therein.

3. A guide-bar support for 'a concrete gage formed fromfa strip of sheet metal, said strip being pointed at one end and having a central longitudinal corrugation therein, and also having supporting arms cut and '25 offset from said strip, portions of the strip above said arms serving as retaining clips #arried in said arms. a

4. A guide-bar support for a concrete gage adapted to be driven into forms for concrete floors, said gage comprising a sheet metal strip pointed at its lower end and perforated near said'end, said strip having an arm near its upper end to'carry a guide, said'arm being cut and offset from the strip, the metal at the upper end of the strip form'- over the guide-bar ing a driving head and also forming a phable retaining-cl'ip to hold the guide within the arm;

A guide-bar support for a concrete gage comprising a strip of sheet metal pointed at its lower end and having rightangled slits cut in the margins near its upper end toform arms, said arms being bent .outward,. then upward and together with said strip adapted to embrarethe lower edge and sides of a guide bar, and retaining clips at the upper end of the strip to hold the guide against upward movement.

(5. A guide-bar support for a concrete vgage formed from a strip of sheet metal,

saidstrip being pointed at one end so that it may be driven into a for and having cuts at the other end to provide an arm and a head, said arm being bent to receive a guide-bar, and said head providing a pliable keeper l'or the guide bar and also furnishing means by which the support may be withdrawn from the form.

'7. A guide-bar support for a concrete gage comprising a sheet metal strip formed with a point at its lower end and a perforation adJaeent thereto, said strip being adapted-to be driven into a form for concrete, a su1')porting arm cut and offset from said retaining clip at the top of the strip adapted .stripto receive a guide-bar, and a pliable to be bent over the guide-bar, as and for.

the purposes described.

Whereof, I have hereunto subscribed my name to this 'specificatlon.

HENRY c.- sTRuoHEN 

